Home / 8,115.87-12,179.96-5,477.13

Finding the Fourth Proportional to 8,115.87, 12,179.96 and 5,477.13

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Solution

The fourth proportional to 8,115.87, 12,179.96 and 5,477.13 is: 8,219.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,115.87 : 12,179.96 = 5,477.13 : x
  2. Step 2: Convert to fraction form
    8,115.87/12,179.96 = 5,477.13/x
  3. Step 3: Cross multiply
    8,115.87x = 12,179.96 × 5,477.13
  4. Step 4: Simplify right side
    8,115.87x = 66,711,224.31
  5. Step 5: Solve for x
    x = 66,711,224.31/8,115.87
  6. Step 6: Final answer
    x = 8,219.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.